D.C. Mun. Regs. tit. 24, r. 24-610
Except as permitted in § 610.2, any person employed to park or supervise the parking of automobiles in a parking facility, or who parks or supervises the parking of automobiles in a parking facility, must possess a parking facility attendant's license and pay a license fee.
The owner or operator of a parking facility, or the owner's duly authorized agent, may employ an individual who does not hold a parking facility attendant's license, but who does hold a valid motor vehicle operator's license, to park or supervise the parking of automobiles for not more than seventy-two (72) hours before the submission by the attendant of an application to the Director, and upon the issuance by the Director of a receipt prescribed in this section.
Each license shall be valid for two (2) years.
The licensee shall carry the license issued under this section on his or her person at all times while engaged in the licensed occupation.
The licensee shall exhibit his or her license on demand to any customer of the parking lot, or to any authorized representative of the District government.
The license issued to any individual may be revoked at any time in accordance with the terms of D.C. Official Code § 47-2844 (2001).
No person shall be issued a parking facility attendant's license unless he or she possesses a valid motor vehicle operator's license.
No person shall operate a motor vehicle under the authority of a parking facility attendant's license unless the person also has been issued, and has in his or her possession at the time of operating the motor vehicle, a valid motor vehicle operator's license.
While providing parking facility services, each licensee shall wear a uniform that identifies the licensee as working for a parking lot company.
D.C. Mun. Regs. tit. 24, r. 24-610